Weather in Bay Saint Louis, MS
Updated 2026-08-11 11:15 local time · ZIP codes 39520
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
88°4% rain95°4% rain95°4% rain95°4% rain94°5% rain94°4% rain92°4% rain90°6% rain87°7% rain
86°7% rain86°6% rain85°6% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 7%).
It feels like 97°F with winds near 4 mph.
88°F, 4% rain chance and 4 mph wind.
Visibility is around 10 mi; gusts may reach 15 mph.
Current temperature is 88°F, wind 4 mph, rain chance up to 7%.
UV index is 8. Use shade, sunscreen, a hat and sunglasses.
Bay Saint Louis weather today
Sunny and 88°F in Bay Saint Louis, MS. Today's high is 95°F with a 7% rain chance. Winds are around 4 mph with gusts near 4 mph. Relative humidity is 66%, pressure is 30.15 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Bay Saint Louis
Sunrise is at 06:22 AM and sunset is at 07:43 PM. Tomorrow's forecast calls for Sunny with a high near 92°F and a low near 80°F. The maximum rain chance is 8%.